Incoloy 800 Seamless Pipe
Seamless tubes of Incoloy 800, a high-nickel alloy steel (typically 30-35% nickel), designed for elevated-temperature service in chemical processing. Classified under 7304.49.00.05 due to its seamless construction, circular cross-section, and high-nickel stainless steel composition exceeding standard stainless thresholds.
Import Duty Rates by Country of Origin
Alternative Classifications
This product could be classified differently depending on its characteristics or intended use.
If other than circular cross-section
Non-circular seamless stainless steel tubes shift to Chapter 72 for other shapes.
If welded rather than seamless
Welded high-nickel pipes are classified under other tube headings in 7306.
If standard stainless steel (lower nickel)
Lower nickel alloys like 304/316 stainless fall under general stainless seamless tubes.
Not sure which classification is right?
The Tariff Assistant works through the GRI rules on your specific product to reach the right HTS code — and can price the duty on it in the same conversation.
Import Tips & Compliance
• Obtain mill test certificates verifying high-nickel alloy composition to avoid reclassification to standard stainless steel headings
• Ensure seamless certification via non-destructive testing reports, as welded pipes fall under Chapter 73 heading 7305
• Declare exact nickel content percentage; customs may require chemical analysis for high-nickel verification
Related Products under HTS 7304.49.00.05
Hastelloy C-276 Seamless Tube
Seamless circular tubes made from Hastelloy C-276, a nickel-molybdenum-chromium high-nickel alloy steel (over 50% nickel), used in corrosive environments like flue gas desulfurization. Fits 7304.49.00.05 for its seamless, high-nickel stainless steel profile.
Alloy 625 Seamless Pipe
Seamless pipes of Inconel Alloy 625, high-nickel alloy steel (58% min nickel), for aerospace and marine exhaust systems requiring oxidation resistance. Under 7304.49.00.05 as seamless, circular cross-section stainless high-nickel steel.
Inconel 718 Seamless Pipe
High-strength seamless pipes of Inconel 718 high-nickel alloy steel (50-55% nickel), used in gas turbine engine components. Meets 7304.49.00.05 criteria: seamless, circular, stainless high-nickel steel.
Carpenter 20Cb-3 Seamless Pipe
Seamless pipes from Carpenter 20Cb-3, high-nickel stainless alloy steel (32-38% nickel), corrosion-resistant for sulfuric acid plants. Classified 7304.49.00.05 for seamless high-nickel stainless circular profile.
Monel 400 Seamless Tube
Seamless tubes from Monel 400, a nickel-copper high-nickel alloy steel (63-70% nickel), ideal for seawater piping. Classified in 7304.49.00.05 for seamless stainless high-nickel construction.
AL-6XN Seamless Tube
Seamless tubes of AL-6XN super-austenitic high-nickel stainless steel (20-23% nickel minimum), for pharmaceutical processing equipment. Falls under 7304.49.00.05 as high-nickel alloy seamless circular tubes.